What was found
AIR TURNBACK---------------------------------------------------------"AT LIM" AFTER SELECTING CLIMB POWER, LEFT ENGINE FAILED TO ACHIEVE RATED CLIMB POWER WITH LEFT THRUST LEVER AT MAX FORWARD POSITION "FIREWALLED" (AIR TURN BACK).
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR TURNBACK---------------------------------------------------------"AT LIM" AFTER SELECTING CLIMB POWER, LEFT ENGINE FAILED TO ACHIEVE RATED CLIMB POWER WITH LEFT THRUST LEVER AT MAX FORWARD POSITION "FIREWALLED" (AIR TURN BACK).